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CVE-2026-22096 – Missing Authentication Exposes Credentials and Allows Arbitrary File Upload – EV…

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Summary

CVE-2026-22096 is a critical missing-authentication vulnerability (CWE-306) in the EVbee DC-80 DC fast-charging station, affecting all firmware versions prior to V1.5.1. The device’s built-in web server, running on TCP port 8090, implements no authentication mechanism, enabling any network-reachable attacker to retrieve sensitive configuration data — including stored credentials — and upload arbitrary files through multiple exposed endpoints. The vulnerability carries a CVSS 4.0 score of 9.3 (CRITICAL), assessed by the Dutch Institute for Vulnerability Disclosure (DIVD) under coordinated disclosure case DIVD-2026-00001.

Technical details

  • Root cause: The web server embedded in the EVbee DC-80 firmware (TCP port 8090) is deployed without any authentication requirement — classified as CWE-306 (Missing Authentication for Critical Function). No login, token, or session is required to reach its endpoints.
  • Trigger conditions: No prerequisites. Any attacker with network connectivity to port 8090 on an affected device can immediately interact with the exposed endpoints without credentials.
  • Attack vector: Fully remote and unauthenticated over the network — CVSS 4.0 attributes: AV:N (Network), AC:L (Low Complexity), AT:N (No Attack Requirements), PR:N (No Privileges Required), UI:N (No User Interaction).
  • Confidentiality impact: Sensitive configuration data, including device-configured passwords, can be retrieved from exposed endpoints, enabling credential theft and potential lateral movement within charging infrastructure networks.
  • Integrity impact: Arbitrary files can be uploaded to the device through multiple unauthenticated endpoints, enabling modification of device configuration, operational data, or firmware components.
  • Availability impact: CVSS 4.0 assigns a High availability impact (VA:H), consistent with the risk that file upload primitives can disrupt or destabilize device operation on a critical EV charging station.
  • Broader context: CVE-2026-22096 is one of nine vulnerabilities disclosed in DIVD-2026-00001 affecting the same EVbee DC-80 firmware. Related issues in the same release include a command injection in the diagnosis web endpoint (CVE-2026-22095) and missing firmware validation enabling remote code execution (CVE-2026-22097). These vulnerabilities compound the risk on unpatched devices.

Affected software

  • EVbee DC-80 DC fast-charging station — all firmware versions prior to V1.5.1 (all versions from 0 up to, but not including, 1.5.1)

Severity

CVSS 4.0 Base Score: 9.3 (CRITICAL)
Vector string: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

A CVSS v3.1 score has not yet been assigned by NVD as of the publication date of this post.

Mitigation and recommended actions

  • Patch immediately: Update the EVbee DC-80 firmware to version V1.5.1 or later, which addresses this vulnerability. Per DIVD guidance, firmware delivery to connected charging stations is facilitated by ensuring the device maintains backend connectivity to receive updates.
  • Companion update: Update the EVbee Service App to version 1.4.710 or later to address related vulnerabilities disclosed in DIVD-2026-00001.
  • Network mitigation (if immediate patching is not feasible): Restrict access to TCP port 8090 on affected charging stations via firewall rules or network segmentation. Ensure the device management network is not directly reachable from untrusted networks or the public internet.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

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